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Datasheet Microchip MCP1603-ADJI/MC

Part NumberMCP1603-ADJI/MC

The MCP1603 is a high efficiency fully integrated 500 mA 2


  • Download » Datasheet PDF, 794 Kb, Revision: 11-10-2012
    MCP1603 Datasheet
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    2.0 MHz, 500 mA Synchronous Buck Regulator
    Features General Description Over 90% Typical Efficiency Output Current Up To 500 mA Low PFM Quiescent Current = 45 ВµA, typical
    (MCP1603/L) Low Shutdown Current = 0.1 ВµA, typical Adjustable Output Voltage:
    -0.8V to 4.5V Fixed Output Voltage:
    -1.2V, 1.5V, 1.8V, 2.5V, 3.3V (MCP1603/L)
    -1.8V, 3.3V (MCP1603B) 2.0 MHz Fixed-Frequency PWM (Heavy Load) Automatic PWM-to-PFM Mode Transition
    (MCP1603/L) PWM Mode Only Option (MCP1603B) 100% Duty Cycle Operation Internally Compensated Undervoltage Lockout (UVLO) Overtemperature Protection Space Saving Packages:
    -5-Lead TSOT, Two Pinout Types (MCP1603/L)
    -8-Lead 2 x 3 DFN The MCP1603/B/L is a high-efficiency, fully-integrated
    500 mA synchronous buck regulator whose 2.7V to
    5.5V input voltage range makes it ideally suited for
    applications powered from 1-cell Li-Ion or 2-cell/3-cell
    NiMH/NiCd batteries. Applications Cellular Telephones
    Portable Computers
    Organizers / PDAs
    USB Powered Devices
    Digital Cameras
    Portable Equipment
    +5V or +3.3V Distributed Systems
    Headsets пѓЈ 2007-2012 Microchip Technology Inc. At heavy loads, the MCP1603/B/L operates in the
    2.0 MHz fixed frequency pulse-width modulation
    (PWM) mode, which provides a low noise, low-output ...



Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)




# of Outputs1
Automotive RatedNo
Duty Cycle Max1 %
Input Voltage Range2.7 - 5.5 V
Light Load Efficiency ModeYes
Operating Temperature Range-40 to +85 °C
Output Current500 mA) Max
Output Voltage Range0.8 - 4.5 V
Quiescent Current0.045 mA) type
Regulator TypeStep Down (Buck)
SHUTDOWN Current0.1 µA
Switching Frequency2000 kHz
Synchronous RectifierYes
Vfb0.8 V

Eco Plan


Moldel Line

Series: MCP1603 (27)

Manufacturer's Classification

  • Power Management > Switching Regulators > Step Down up to 6V

Other Names:


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